■ IRON ORE
Following are four major varieties of Iron Ores :-
Following are four major varieties of Iron Ores :-
□ Magnetite
◇ This is the best quality of iron ore with having more than 80% metallic content and occurs as massive, hard compact and bumpy ore having Reddish Black ore in colour. Magnetite ores have magnetic quality as a result of which they are known as Magnetite ores.
◇ This is the best quality of iron ore with having more than 80% metallic content and occurs as massive, hard compact and bumpy ore having Reddish Black ore in colour. Magnetite ores have magnetic quality as a result of which they are known as Magnetite ores.
□ Hematite
◇ The Second best ore next to Magnetite is Hematite. It have metallic content from 70 to 80 percent. It is the iron ore, which is maximum used in Iron Steel Industries.
◇ The Second best ore next to Magnetite is Hematite. It have metallic content from 70 to 80 percent. It is the iron ore, which is maximum used in Iron Steel Industries.
□ Limonite
◇ Inferior ores, yellowish in colour – contain 40 to 60% iron metal.
□ Siderite
◇ Also known as iron carbonate this type of ore is inferior quality and contains less than 40% iron.
◇ Contains many impurities and its mining is not economically variable.
◇ Inferior ores, yellowish in colour – contain 40 to 60% iron metal.
□ Siderite
◇ Also known as iron carbonate this type of ore is inferior quality and contains less than 40% iron.
◇ Contains many impurities and its mining is not economically variable.